Drain-tile



(No Model.)

B. M. ORANDAL. Drain Tile.

No. 241,790, Patented May 24,1881.

in runs. mummpm M UNITED STATES PATENT OFFICE.

EDWARD M. CRANDAL, OF CHICAGO, ILLINOIS.

DRAIN-TILE.

SPECIFICATION forming part of Letters Patent No. 241,790, dated May 24, 1881.

(No model.)

To all whom it may concern:

Be it known that I, EDWARD M. CRANDAL, of Chicago, in the county of Cook and State of Illinois, have invented certain Improvements in Drain-Tile, of which the following is a specification.

This invention relates to tile for use in mole and other similar subterranean drains. The earthen tile now so generally employed in these drains are subject to many objections. They are easily broken, take up very considerable room, and are heavy, so that transportation charges upon them are onerous, do not afford unrestrained admission to the water in the earth surrounding them, and are expensive to the user.

In the present invention I have devised a form of tile which is light, inexpensive, compact, and practically indestructible in use; and it consists in a tile formed in cylindrical or other convenient shape, of perforate metal, galvanized or otherwise rendered rust-proof. A tile of this kind is not easily broken, may be handled and transported without injury, and it permits the free entrance of the outside moisture through its perforations, and may be laid so as to form continuous ducts by uniting its ends by a fastening device, or by shaping its ends so that the end of one may lie in the end of its neighbor. A convenient way of accomplishing this latter result, and of economizing stowage-room, is to make the tile tapering, so they may be telescoped one within the other.

I have illustrated my invention in the accompanyin g drawings, wherein Figure l is an exterior view of the tile, and Fig. 2 shows a number of lengths of the same as laid in the ditch.

A represents a cylinder of wire-cloth, having an interior diameter corresponding to that desired for the drain.

a a are binding-wires used to hold the cloth after it has been bent to the cylindrical or other shape desired. The lengths of the tile (of which the cylinder A is one) I prefer to make slightly tapering, as shown, so that they may be compactly packed for transportation, and also so they may be laid in the ditch with the small end of one within the large end of its neighbor. One end may be made flaring, so as to receive the end of the adjacent length, after the manner of water and other tightiointed pipes, if that method is thought better. The lengths are rendered rust-proof by galvanizing, or by dipping them in a suitable coating'paint. The lengths may be tied together by wire passed through the perforations, or in any other suitable Way, if it is desired to secure a number of them together.

Instead of wire-cloth, other perforate metal may be used, if preferred.

When the ends are connected, either by tying or by telescoping, there is less danger of the continuity of the drain being broken by failure of the lengths to connect, or by changes in position after laying, than with the forms now used.

There is a large saving in the amount of room needed in stowing these tiles, because of the difference in thickness of the material itself.

I claim 1. The drain-tile the walls whereof are con structed of wire-cloth or other metal, having open perforations to admit the surrounding moisture, substantially as set forth.

2. The drain-tile constructed of wire-cloth or other metal, having open perforations and formed into tapering lengths, substantially as set forth.

EDWARD M. CRANDAL. Witnesses:

EDMUND ADoooK, EVERETT BROWN. 

